# Recent questions tagged meter

Explain the “mitigation of power theft” and “faulty meter replacement” for energy conservation techniques to reduce commercial losses.

Describe principle of operation of Doppler type ultrasonic flow meter with diagram.

Draw the diagram and explain the working of ferrodynamic type frequency meter.

Draw a block diagram of electronic energy meter. Write function of each block.

State the function and shape of following parts used in induction type energy meter: i) Series magnet ii) Shunt magnet iii) Al disc iv) Brake magnet

With a neat sketch explain working of 1 phase dynamometer type power factor meter.

Write the working of L-C-R meter with suitable sketch.

State the meaning of creeping error in 1 phase energy meter.

State the use of shunt and series resistance used in extension of meter.

Draw a neat sketch of 1-ph induction type energy meter and write operating principle of it.

Draw and describe working of electronic energy meter.

Describe with working of LCR meter for measurement of inductance.

What is meant by energy meter constant?

With neat diagram explain calibration of energy meter by direct loading method.

Explain working of Weston type frequency meter.

Why energy meter is integrating type measuring instrument?

Write any two advantages of digital energy meter.

State the application of phase sequence indicator; clip on ammeter, frequency meter & P.F. meter.

List any four errors in induction type energy meter. Give method of compensation for each.

kWh meter is the electric meter that measures the amount of electrical _________ in kWh that was consumed in the house.  (A) Energy (B) Current (C) Voltage (D) None of the above

For measurement of radio frequency ac signals __________ type meter is used

A moving coil of meter has 100 turns, and a length and depth of 10mm and 20mm respectively. It is positioned in a uniform radial flux density of 200 mT. The coil carrier current capacity is 50 mA. The torque on the coil is

What is the power factor when a single phase watt meter operating on 200 V and 5 A for 5 hours makes 2016 revolutions and the meter constant in revolution is 420? A) 0.04 B) 1.04 C) 0.96 D) None of these

The meter which does not have any component in it to provide control torque is (A) Electrodynamometer for current measurement (B) Electrodynamometer for voltage measurement (C) Electrodynamometer for power measurement. (D) Electrodynamometer for power factor measurement.

An induction type energy meter is found to run fast. Correction for this error can be made by  (A) Over-load compensation. (B) Voltage compensation. (C) Moving the brake magnet away from the centre of the disc. (D) Moving the brake magnet towards the centre of the disc.

A 200 V, 5 A d.c. energy meter is tested at its marked ratings. The resistance of the pressure circuit is 8000 Ω and that of current coil is 0.1 Ω. The power consumed when testing the meter with phantom loading with current circuit excited by a 6 V battery is (A) 2.5 W (B) 5 W (C) 32.5 W (D) 35 W

A moving coil meter has a resistance of 3 Ω and gives full scale deflection with 30 mA. To measure voltage up to 300 V, the external resistance to be connected in series with the instrument is (A) 9997 Ω (B) 10000 Ω (C) 997 Ω (D) 10003 Ω

Phantom loading for testing of energy meter is used (A) to isolate the current and potential circuits (B) to increase power loss during testing (C) for meters having low current ratings (D) to test meters having a large current rating for which loads may not be available

The disc of a single phase Induction-type energy meter makes 60 revolutions in 6 minutes. Meter Constant is 1200 rev/kWh. Power consumption in the load is (A) 1.2 kW (B) 1 kW (C) 600 W (D) 500 W

One newton meter is same as?

What type of meter is used to measure current?

What is a digital power meter?

What is an RF Power Meter?